CN108278240A - A kind of automatic damping adjusting valve - Google Patents
A kind of automatic damping adjusting valve Download PDFInfo
- Publication number
- CN108278240A CN108278240A CN201810067295.2A CN201810067295A CN108278240A CN 108278240 A CN108278240 A CN 108278240A CN 201810067295 A CN201810067295 A CN 201810067295A CN 108278240 A CN108278240 A CN 108278240A
- Authority
- CN
- China
- Prior art keywords
- hydraulic fluid
- fluid port
- flow hole
- valve
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013016 damping Methods 0.000 title claims abstract description 42
- 239000012530 fluid Substances 0.000 claims abstract description 66
- 238000009434 installation Methods 0.000 claims abstract description 8
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention proposes a kind of automatic damping adjusting valve, which includes：Valve body which is provided with hydraulic fluid port A, hydraulic fluid port B and installation cavity；Valve pocket is plugged in installation cavity, and valve pocket is equipped with the first through flow hole communicated with hydraulic fluid port A；Pressure assignment component is located at the top of valve pocket endoporus；Spool, the spool is equipped with the groove communicated with the first through flow hole and the second through flow hole communicated with hydraulic fluid port B, damper is installed in second through flow hole, the third through flow hole for controlling the conical surface and the connection groove and the second through flow hole whether the groove is connected to hydraulic fluid port B is additionally provided on spool.The automatic damping adjusting valve can reduce the lagging influence that controlled valve is opened, and not influence the stability of the pilot control part of controlled valve again.
Description
Technical field
The present invention relates to valve technology fields, and in particular to a kind of automatic damping adjusting valve.
Background technology
In the mechanical equipments such as modern engineering machinery, building machinery, hydraulic pressure load bearing system is widely applied, wherein balancing
Valve is the key that this kind of system Hydraulic Elements.Currently, well known balanced valve is mainly made of pilot control valve and main valve, in order to increase
Add the damping of balanced valve, reduce shake when load declines, existing balanced valve is provided with several resistances generally at pilot control valve
Buddhist nun hole, such as the Chinese utility model patent of Patent No. ZL 01139093.X, entitled " hydraulically balanced valve " are exactly such set
Meter.But the pilot control valve of several damping holes of this set has the drawback that：When control load declines, due to resistance
Buddhist nun is excessive, and the pressure of the working connection of actuator is lagged behind by the variation of the pilot pressure of damping hole, can cause balanced valve open with
Delay is closed, to cause actuator action lag, influences operating efficiency, especially (example when hydraulic oil viscosity is relatively high
Such as：The relatively low environment of temperature) this lagging influence is more obvious.Actuator action lag can cause working connection pressure to rise very
Height, balanced valve could be opened, this will result in load cavity supercharging, so that system pressure is in high pressure conditions, seriously affects
The performance of Hydraulic Elements and service life；On the other hand the momentary load that can be opened in balanced valve accelerates to decline, and speed is uncontrollable.
Invention content
For some or all of of the above-mentioned technical problem in the presence of the prior art, the present invention proposes a kind of automatic
Orifice valve is adjusted, which can reduce the lagging influence that controlled valve is opened, and not influence controlled valve again
The stability of pilot control part.
In order to realize the above goal of the invention, on the one hand, the present invention proposes a kind of automatic adjustment resistance having following structure
Buddhist nun's valve, including：
Valve body which is provided with hydraulic fluid port A, hydraulic fluid port B and installation cavity；
Valve pocket has and axially penetrates through hole, and the valve pocket is plugged in the installation cavity, and the valve pocket is equipped with and hydraulic fluid port
The first through flow hole that A is communicated；
Pressure assignment component is located at the top of the valve pocket endoporus；
Spool is slidably arranged in the endoporus of the valve pocket, and upper part offsets with the pressure assignment component, described
Spool is equipped with the groove communicated with the first through flow hole and the second through flow hole communicated with hydraulic fluid port B, pacifies in second through flow hole
Equipped with damper, the damper is equipped with damping hole, whether the control groove is additionally provided on the spool being connected to hydraulic fluid port B
The conical surface and the connection groove and the second through flow hole third through flow hole；
When hydraulic fluid port B pressure is less than the active force of pressure assignment component, the fluid of hydraulic fluid port A can successively through the first through flow hole,
Groove flows into hydraulic fluid port B, and the fluid of hydraulic fluid port A can also flow into hydraulic fluid port through the first through flow hole, groove, third through flow hole, damping hole successively
B；
When hydraulic fluid port B pressure reaches the active force of pressure assignment component, the spool moves up, and the conical surface blocks
The fluid of the valve port of the valve pocket, hydraulic fluid port A can only be successively through the first through flow hole, groove, third through flow hole, the second through flow hole, resistance
Buddhist nun hole flows into hydraulic fluid port B.
In one embodiment, the pressure assignment component includes spring base, elastic component, adjusting rod and locking nut,
The spring base is against the upper end of the spool, and the adjusting rod is bolted on the valve pocket, and the elastic component is located at the bullet
Between spring abutment and the adjusting rod, the locking nut is threadedly connected on the adjusting rod.
In one embodiment, the area of passage of the groove is more than the area of passage of the damping hole.
Compared with prior art, the advantages of automatic damping adjusting valve of the invention, is：
Due to be provided between hydraulic fluid port A and hydraulic fluid port B the first through flow hole in parallel, spool groove composition first flow and
The second flow channel of first through flow hole, groove, third through flow hole, the second through flow hole, damping hole composition, and first flow and second
The flow area in road is different.For controlling balanced valve, so as to so that fluid by after first flow in balanced valve it is main
The control plunger shaft of valve sets up rapidly pressure, improves the dynamic responding speed of main valve, reduces balanced valve and opens lagging influence.
After reaching main valve Opening pressure, first flow is closed, and the hydraulic oil of hydraulic fluid port A can only flow into balanced valve control by second flow channel
Plunger shaft increases the damping of system in turn, balanced valve can not only be made quickly to open, and can also effectively inhibit vibration.
Description of the drawings
The preferred embodiment of the present invention is described in detail below in conjunction with attached drawing, in figure：
Fig. 1 shows the structural schematic diagram of one of the automatic damping adjusting valve of present invention embodiment；
Fig. 2 shows the structural schematic diagram when automatic damping adjusting valve core of the present invention is closed；
Fig. 3 shows the hydraulic schematic diagram of the automatic damping adjusting valve of the present invention；
Fig. 4 shows the hydraulic circuit diagram of the hydraulic system of the automatic damping adjusting valve including the present invention.
In attached drawing, identical component uses identical reference numeral.Attached drawing is not drawn according to actual ratio.
Specific implementation mode
In order to make technical scheme of the present invention and advantage be more clearly understood, below in conjunction with attached drawing to the exemplary of the present invention
Embodiment is described in more detail.Obviously, the described embodiments are merely a part of the embodiments of the present invention, rather than
The exhaustion of all embodiments.And in the absence of conflict, the feature in the embodiment and embodiment in the present invention can be mutual
It is combined.
Inventor is during invention it is noted that controlling balanced valve by the pilot control valve provided with several damping holes
Or other types are when being controlled valve, being controlled valve, to open lag obvious, and controlled valve stability is not high.
For the above deficiency, the embodiment of the present invention proposes a kind of automatic damping adjusting valve, is illustrated below.
It as figure 1 shows the one of which embodiment of the automatic damping adjusting valve of the present invention.In this embodiment, of the invention
Automatic damping adjusting valve include mainly：
Valve body 1 which is provided with hydraulic fluid port A, hydraulic fluid port B and installation cavity；
Valve pocket 2 has and axially penetrates through hole, and valve pocket 2 is plugged in the installation cavity of valve body 1, and valve pocket 2 is equipped with and hydraulic fluid port A
The first through flow hole 2.1 communicated；
Pressure assignment component is located at the top of 2 endoporus of valve pocket；
Spool 4 is slidably arranged in the endoporus of valve pocket 2, and upper part offsets with the pressure assignment component, spool 4
It is equipped with the groove 4.1 communicated with the first through flow hole 2.1 and the second through flow hole 4.3 communicated with hydraulic fluid port B, the second through flow hole 4.3
Damper 3 is inside installed, damper 3 is equipped with damping hole 3.1, be additionally provided on spool 4 control groove 4.1 be connected to hydraulic fluid port B and
The third through flow hole 4.2 of the no conical surface 4.4 and communication groove 4.1 and the second through flow hole 4.3；
When hydraulic fluid port B pressure is less than the active force of pressure assignment component, the fluid of hydraulic fluid port A can be successively through the first through flow hole
2.1, groove 4.1 flows into hydraulic fluid port B, and the fluid of hydraulic fluid port A can also be successively through the first through flow hole 2.1, groove 4.1, third through flow hole
4.2, damping hole 3.1 flows into hydraulic fluid port B；
When hydraulic fluid port B pressure reaches the active force of pressure assignment component, spool 4 moves up, and the conical surface 4.4 blocks valve pocket
The fluid of 2 valve port, hydraulic fluid port A can only be successively through the first through flow hole 2.1, groove 4.1, third through flow hole 4.2, the second through flow hole
4.3, damping hole 3.1 flows into hydraulic fluid port B.
In one embodiment, as shown in Figure 1, pressure assignment component includes spring base 7, elastic component 8, adjusting rod 9 and lock
Tight nut 10, spring base 7 are against the upper end of spool 4, and adjusting rod 9 is bolted on valve pocket 2, and elastic component 8 is located at spring base 7 and adjusts
Between bar 9,10 line of locking nut spiral shell is connected on adjusting rod 9.
In one embodiment, the area of passage of groove 4.1 is more than the area of passage of damping hole 3.1.
As shown in figure 4, the application principle figure for automatic damping adjusting valve of the invention in hydraulic system, the hydraulic system
Include mainly：Hydraulic power source 11, directional control valve 12, hydraulic cylinder 14, balanced valve 13 and the sheet being connect with the control mouth of balanced valve 13
The automatic damping adjusting valve of invention.Structure as elucidated before can be used in the automatic damping adjusting valve.
The basic functional principle of the hydraulic system is：The fluid come out from hydraulic power source 11 is through 12 rear portion of directional control valve
Into hydraulic cylinder 14, another part is introduced into the hydraulic fluid port A on the valve body 1 of the automatic damping adjusting valve of the present invention.
Setting pressure (this pressure application of the pressure assignment component of the present invention is not up in the control cavity pressure of balanced valve 13
In be traditionally arranged to be the Opening pressure of balanced valve 13) when, the fluid of hydraulic fluid port A can be flowed through the first through flow hole 2.1, groove 4.1 successively
Oiler B is controlled chamber quickly to establish pressure into balanced valve 13.Reach setting pressure in the control cavity pressure of balanced valve 13
Afterwards, as shown in Fig. 2, the conical surface 4.4 closes the valve port of valve pocket 2, the fluid of hydraulic fluid port A is through that can only pass through the first of automatic damping adjusting valve
Through flow hole 2.1, groove 4.1, third through flow hole 4.2, the second through flow hole 4.3, damping hole 3.1 flow into hydraulic fluid port B, gentle into controlled
Chamber.Lagging influence is opened to can not only reduce balanced valve 13, but also do not influence the pilot control part of controlled valve 13 again
Stability.
When hydraulic cylinder 14 is begun to decline, balanced valve 13 can quickly be rung under the action of the automatic damping adjusting valve of the present invention
Answer, during the decline, the decrease speed of hydraulic cylinder 14 is controllable so that hydraulic cylinder 14 can gently decline or substantially at the uniform velocity under
Drop.When hydraulic cylinder 14 needs to stop, A mouthfuls of rapid pressure drops, B mouthfuls of pressure flowed into hydraulic fluid port A, balance through damping hole 3.1 before this
Valve 13 starts slowly closing, once B mouthfuls of pressure are less than the active force of pressure assignment component, the conical surface 4.4 is opened, and fluid is by balanced valve
13 control chamber flows rapidly into the A mouths of automatic damping adjusting valve through B mouthfuls, groove 4.1, and balanced valve 13 can be with quick closedown.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.Therefore, it includes excellent that the following claims are intended to be interpreted as
Select embodiment and fall into having altered and/or changing for the scope of the invention, the change made according to an embodiment of the invention and/
Or modification should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of automatic damping adjusting valve, which is characterized in that including：
Valve body which is provided with hydraulic fluid port A, hydraulic fluid port B and installation cavity；
Valve pocket has and axially penetrates through hole, and the valve pocket is plugged in the installation cavity, and the valve pocket is equipped with and hydraulic fluid port A phases
The first logical through flow hole；
Pressure assignment component is located at the top of the valve pocket endoporus；
Spool is slidably arranged in the endoporus of the valve pocket, and upper part offsets with the pressure assignment component, the spool
It is equipped with the groove communicated with the first through flow hole and the second through flow hole communicated with hydraulic fluid port B, is equipped in second through flow hole
Damper, the damper are equipped with damping hole, and the cone controlled whether the groove is connected to hydraulic fluid port B is additionally provided on the spool
The third through flow hole of face and the connection groove and the second through flow hole；
When hydraulic fluid port B pressure is less than the active force of pressure assignment component, the fluid of hydraulic fluid port A can be successively through the first through flow hole, groove
Hydraulic fluid port B is flowed into, the fluid of hydraulic fluid port A can also flow into hydraulic fluid port B through the first through flow hole, groove, third through flow hole, damping hole successively；
When hydraulic fluid port B pressure reaches the active force of pressure assignment component, the spool moves up, and the conical surface blocks described
The fluid of the valve port of valve pocket, hydraulic fluid port A can only be successively through the first through flow hole, groove, third through flow hole, the second through flow hole, damping hole
Flow into hydraulic fluid port B.
2. a kind of automatic damping adjusting valve according to claim 1, which is characterized in that the pressure assignment component includes bullet
Spring abutment, elastic component, adjusting rod and locking nut, the spring base are against the upper end of the spool, and the adjusting rod is bolted in institute
It states on valve pocket, between the spring base and the adjusting rod, the locking nut is threadedly connected to described the elastic component
On adjusting rod.
3. a kind of automatic damping adjusting valve according to claim 1 or 2, which is characterized in that the area of passage of the groove
More than the area of passage of the damping hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810067295.2A CN108278240B (en) | 2018-01-24 | 2018-01-24 | Automatic adjusting damping valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810067295.2A CN108278240B (en) | 2018-01-24 | 2018-01-24 | Automatic adjusting damping valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108278240A true CN108278240A (en) | 2018-07-13 |
| CN108278240B CN108278240B (en) | 2020-01-10 |
Family
ID=62804931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810067295.2A Active CN108278240B (en) | 2018-01-24 | 2018-01-24 | Automatic adjusting damping valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278240B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530905A (en) * | 2020-04-16 | 2021-10-22 | 上海圣克赛斯液压股份有限公司 | Walking hydraulic control valve for overhead working truck |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570721A (en) * | 1995-03-29 | 1996-11-05 | Caterpillar Inc. | Double acting solenoid and poppet valve servomechanism |
| DE19945183A1 (en) * | 1999-09-21 | 2001-03-22 | Mannesmann Rexroth Ag | Seat valve |
| DE10324051A1 (en) * | 2003-05-27 | 2004-12-16 | Bosch Rexroth Ag | Pressure reducing valve |
| CN203809759U (en) * | 2014-04-25 | 2014-09-03 | 徐工集团工程机械股份有限公司 | Back pressure valve |
| CN106015152A (en) * | 2016-07-19 | 2016-10-12 | 宁波文泽机电技术开发有限公司 | Slowly-opened and rapidly-closed flow type balance valve |
-
2018
- 2018-01-24 CN CN201810067295.2A patent/CN108278240B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570721A (en) * | 1995-03-29 | 1996-11-05 | Caterpillar Inc. | Double acting solenoid and poppet valve servomechanism |
| DE19945183A1 (en) * | 1999-09-21 | 2001-03-22 | Mannesmann Rexroth Ag | Seat valve |
| DE10324051A1 (en) * | 2003-05-27 | 2004-12-16 | Bosch Rexroth Ag | Pressure reducing valve |
| CN203809759U (en) * | 2014-04-25 | 2014-09-03 | 徐工集团工程机械股份有限公司 | Back pressure valve |
| CN106015152A (en) * | 2016-07-19 | 2016-10-12 | 宁波文泽机电技术开发有限公司 | Slowly-opened and rapidly-closed flow type balance valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530905A (en) * | 2020-04-16 | 2021-10-22 | 上海圣克赛斯液压股份有限公司 | Walking hydraulic control valve for overhead working truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108278240B (en) | 2020-01-10 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191216 Address after: 325000 Linlong village, Oubei street, Yongjia County, Wenzhou City, Zhejiang Province (within Wenzhou Yuquan pump valve manufacturing Co., Ltd.) Applicant after: Zhejiang Mingyi Valve Technology Co., Ltd Address before: Zhenhai District in Zhejiang province 315200 Ningbo Jiaochuan streets Yinfeng Xiaoyue No. 30 building 501 room Applicant before: Chen Yanyan |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |